8 Nov
2000
8 Nov
'00
10:39 a.m.
Ever since the late 60's, very large simulations of
power
grids were being performed on analog computers for the purposes of
contingency analysis and dynamic stability assessment. These
special-purpose analog computers filled entired rooms and sometimes
had thousands of dynamic states (one integrator per dynamic state).
Exactly!
An older elector mechanical device did this for a different problem.
Given variables: speed over surface,
altitude,
gravity,
an objects drag
Problem: At what time do you release an object to hit a
predetermined spot.
Hint: it was top secret in the early 1940s.
Allison
8 Nov
8 Nov
4:15 p.m.
On Wed, 8 Nov 2000, ajp166 wrote:
And rather smaller and lighter than the Navy's Mark 1A (analog) fire
control computer which did a rather precise job of laying 2000# 16"
- and smaller - projectiles to the desired location.
- don
Ever since the
late 60's, very large simulations of power
grids were being performed on analog computers for the purposes of
contingency analysis and dynamic stability assessment. These
special-purpose analog computers filled entired rooms and sometimes
had thousands of dynamic states (one integrator per dynamic state).
Exactly!
An older elector mechanical device did this for a different problem.
Given variables: speed over surface,
altitude,
gravity,
an objects drag
Problem: At what time do you release an object to hit a
predetermined spot.
Hint: it was top secret in the early 1940s.
Allison
9 Nov
9 Nov
2:33 a.m.
An older elector mechanical device did this for a
different problem.
Given variables: speed over surface,
altitude,
gravity,
an objects drag
Problem: At what time do you release an object to hit a
predetermined spot.
Hint: it was top secret in the early 1940s.
And I would like to see an accurate simulation of one. I've seen
the real thing, but being fastened to a metal post set into a concrete
floor, it wasn't in operable condition. Not to mention that none of the
dials were labeled, undoubtedly because the functions of each were also
top secret at the time it was manufactured.
Eric
8809
days inactive
8810
days old
2 comments
3 participants
participants (3)
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ajp166＠bellatlantic.net -
donm＠cts.com -
korpela＠ellie.ssl.berkeley.edu